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Youtube Resumer (using the url)

Changes the ?t= parameter when pausing. Other version: https://greasyfork.org/en/scripts/455475-youtube-resumer

  1. // ==UserScript==
  2. // @name         Youtube Resumer (using the url)
  3. // @description  Changes the ?t= parameter when pausing. Other version: https://greasyfork.org/en/scripts/455475-youtube-resumer
  4. // @version      4
  5. // @match        https://www.youtube.com/*
  6. // @icon         https://www.google.com/s2/favicons?sz=64&domain=youtube.com
  7. // @grant        none
  8. // @namespace    https://greasyfork.org/users/206408
  9. // ==/UserScript==
  10.  
  11. (async () => {
  12.  
  13.     function l(...args){
  14.         console.log(`[Youtube Resumer]`, ...args)
  15.     }
  16.  
  17.     function findVideo(){
  18.         return document.querySelector('video')
  19.     }
  20.  
  21.     //update ?t=
  22.     function changeUrl(time){
  23.         const url = new URL(window.location.href)
  24.         url.searchParams.set('t', time)
  25.         window.history.replaceState(null, null, url)
  26.     }
  27.  
  28.     function listen(){
  29.         const video = findVideo()
  30.         video.addEventListener('pause', () => {
  31.             changeUrl(parseInt(video.currentTime))
  32.         })
  33.     }
  34.  
  35.     let listening = false //the video element exists even if you go back to the home page, so no need to readd event listeners
  36.  
  37.     //Event for each page change
  38.     document.addEventListener("yt-navigate-finish", function() {
  39.         l('navigate-finish')
  40.         //Match page with video
  41.         if(window.location.href.match(new RegExp('https://www.youtube.com/watch\\?v=.'))) {
  42.             //Add video listener once
  43.             if(!listening){
  44.                 l('listening')
  45.                 listen()
  46.                 listening = true
  47.             }
  48.         }
  49.     });
  50. })();